Best Time to Fly PWM to LGA: On-Time Stats by Hour & Airline
Portland International Jetport → LaGuardia
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.0% of Portland (PWM) to New York (LGA) flights arrived on time (1,183 scheduled flights). That is 4.4 points above the national average of 77.6%.
Among 2 airlines, Republic Airways led with 82.4% on time and American Airlines was last with 79.6%.
Over 24 months, Saturday was the most reliable day (88% on time) and March the worst month (72%).
The cancellation rate was 4.5% (US average 1.8%).
PWM to LGA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 82.4% | 76 min | 4.5% | 1,126 |
| American Airlines | 79.6% | 317 min | 2.0% | 50 |
| Delta Air Lines | Limited data | 7 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to LGA
On-time arrival % by scheduled departure hour (local time), 2,411 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 20 | |
| 6am–7am | 86.7% | 2.6% | 456 |
| 7am–8am | 90.9% | 2.0% | 202 |
| 8am–9am | 81.2% | 3.0% | 33 |
| 9am–10am | 91.3% | 0.0% | 46 |
| 10am–11am | 91.8% | 1.4% | 74 |
| 11am–12pm | 82.5% | 3.4% | 350 |
| 12pm–1pm | 83.4% | 2.3% | 217 |
| 1pm–2pm | 82.9% | 2.8% | 216 |
| 2pm–3pm | Limited data | 13 | |
| 3pm–4pm | 86.6% | 5.7% | 88 |
| 4pm–5pm | 78.8% | 3.5% | 377 |
| 5pm–6pm | 64.0% | 10.1% | 287 |
| 6pm–7pm | Limited data | 32 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PWM to LGA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 90.9% | +7.8 pts | 0.0% | 33 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.3% | +1.2 pts | 0.0% | 51 |
| Summer peak (Jun 15 - Aug 15) | 77.1% | -6.0 pts | 9.6% | 450 |
| All other days | 83.1% | — | 2.7% | 1,877 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).